22240572 has 12 divisors (see below), whose sum is σ = 51894696. Its totient is φ = 7413520.

The previous prime is 22240553. The next prime is 22240579. The reversal of 22240572 is 27504222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926679 + ... + 926702.

It is an arithmetic number, because the mean of its divisors is an integer number (4324558).

Almost surely, 2^22240572 is an apocalyptic number.

It is an amenable number.

22240572 is an abundant number, since it is smaller than the sum of its proper divisors (29654124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22240572 is a wasteful number, since it uses less digits than its factorization.

22240572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853388 (or 1853386 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22240572 is about 4715.9910941392. The cubic root of 22240572 is about 281.2215844872.

Adding to 22240572 its reverse (27504222), we get a palindrome (49744794).

The spelling of 22240572 in words is "twenty-two million, two hundred forty thousand, five hundred seventy-two".